Shifter Lines 101: Introduction to Shifter Lines
(Published on 14. November 2023, 11:43 by gUBBLOR)
Shifter Lines 102: Lock the killer in the cage
All my series:
Equality Cages
EquaLite Cages
Shifter Lines
Shifter Dots
Rules:
Normal Sudoku rules apply. Place the digits 1 through 9 in each empty cell. Digits must not repeat within the same row, column, or box.
Shifter lines: Adjacent digits within the same box on a shifter line share both parity (even/odd) AND polarity (low/high). Whenever the line enters a new box either the parity OR the polarity shifts, never both. Shifter lines can never have 5 on it. Digits may repeat on lines.
Kropki dots: A black dot between cells indicates cell values with a 2:1 ratio. A white dot between cells indicates cells with consecutive values. Not all dots are shown.
XV: Adjacent cells connected with an X must sum to 10. Adjacent cells connected with a V must sum to 5. Not all X's or V's are shown.
Here's an example of a valid shifter line:
Solve here:
Sudokupad
Video featuring the puzzle:
Sudoku Sleuth
BremSter Puzzles
Solution code: Row 9 left to right and column 7 top to bottom - no spaces.
Comments
on 23. October 2024, 02:23 by kopo1
Nice and easy! Splendid!
on 23. September 2024, 02:45 by h1dd3ntrip7e
Incredible! Very powerful rule, and this was my favourite flavor of puzzle: Beginner.
on 21. June 2024, 20:14 by cozoq
This is a perfect introduction to Shifter Lines. In particular, the 1 with the Kropki dot in box 9 really exemplifies where to start and shows the logic of how to proceed.
on 9. June 2024, 15:17 by wuc
Cool idea. Very smooth snack. Thx.
on 8. June 2024, 21:31 by maiaz
easy but loads of fun!
on 2. May 2024, 18:58 by mrobocop
Very enjoyable for a beginner (like me) in other Sudoku styles. Thank you for a great puzzle.
on 31. March 2024, 13:50 by mixus minimax
9:56! Very fun rule set. The break-in was really easy, but I did make a wrong deduction at some point so I did break it once
on 25. March 2024, 17:07 by 91loves
This took me emberrassingly long time to do, because it ket breaking. I still have no idea where I went wrong but I finally didi it. So happy.
on 9. March 2024, 18:33 by gUBBLOR
Added links
on 7. March 2024, 06:37 by cozoq
A perfect introduction to shifter lines
on 25. February 2024, 09:04 by PhoenixAki
15:18 for me, I started this expecting to not be able to finish it but it proved to be far more of an approachable design/ruleset than I expected, nicely done :)
on 24. February 2024, 20:10 by Nootato
Haven't solved a puzzle this quickly or smoothly before, really well done setting it! Managed to speedrun it in 8:29.
on 12. December 2023, 23:38 by gUBBLOR
Added some links
on 29. November 2023, 18:50 by gUBBLOR
Added video link to the puzzle being solved
on 29. November 2023, 08:45 by pyroinpink
Such a fun solve with a very cool constraint!
on 23. November 2023, 00:41 by Melriken
more please...
on 21. November 2023, 15:10 by Viccis
Easy to follow for beginners. Always a clear path. A very nice puzzle
on 16. November 2023, 09:04 by gUBBLOR
Added video link to the puzzle being solved
on 15. November 2023, 19:42 by Soothsayer
What a wonderful puzzle, and constraint. Thanks for setting!
on 14. November 2023, 21:57 by Caconym
Fun constrain!
on 14. November 2023, 21:35 by br3akingp01nt
This was a wonderful puzzle and a great introduction to this fun new constraint. I can't wait to see what people can do with a ruleset like this
on 14. November 2023, 19:55 by WithIceCream
Fun constraint; looking forward to seeing more!
on 14. November 2023, 18:30 by SilentRaisin
really enjoyed this
on 14. November 2023, 16:46 by Snaques
Found this pretty fun, but also gave up once due to the line behavior in box 3.
I'm curious how the more difficult versions will work as the rule is rather restrictive. If you know one digit, it immediately reveals the second, etc.
on 14. November 2023, 15:32 by gUBBLOR
Rephrased the shifter line rules for clarification
on 14. November 2023, 14:39 by GorgeousNicko
Nice constraint. I like it a lot.
on 14. November 2023, 13:16 by ark29
Really enjoyable puzzle once I figured out how the constraints worked. The shifter lines in box 3 confused me initially, but that was my error. It was great fun.
on 14. November 2023, 12:19 by Chelo
Very nice constraint, it was funny to solve. Thank you
on 14. November 2023, 12:16 by Fizz
Very cool new constraint and a good introductory puzzle!
